Hi Folks I posted about this strange occurrence last week, but i happened again at practice last night, so i need a bit of advice! I run a p-bass thru an ashdown abm 500 thru a warwick 210 (400w 8ohm) and a laney 15 (300w 8ohm) Occasionally whilst playing my 210 goes crazy and lets out this massive continuous distortion and the speakers move so much it looks like they're gonna pop out. Every time this has happened I have instinctively just hit the amp power switch as I don't want my speakers to die. Our guitarist and drummer both think this is due to my bass compactor, which seems to cause feedback when compression is set high. I was sceptical at first, but now i don't know, could this be a factor? Another symptom is that the VU meter fly's into the red when this happens. HELP?! Phil.